STOCKHOLM (AP)—Bjorn Borg is predicting that Swedish compatriot Robin Soderling will soon reach the No. 1 ranking after beating Roger Federer in the French Open quarterfinals.

Borg described Soderling’s play against Federer on Tuesday as “perfect” and said the seventh-ranked Swede could surpass both the Swiss star and Rafael Nadal in the rankings.

Borg told Swedish newspaper Expressen on Wednesday that Soderling “will become the world’s No. 1, and will do it faster than we can expect.”

Borg holds a record six French Open titles from 1974-81. The last Swede to win the title at Roland Garros was Mats Wilander in 1988.

Nadal has four titles and would overtake the No. 1 spot from Federer with a fifth.